/*
 * To change this template, choose Tools | Templates
 * and open the template in the editor.
 */
package servlets.patient.medicationtask;

import be.ugent.medirem.logic.PatientRemote;
import be.ugent.medirem.logic.TaskRemote;
import be.ugent.medirem.persistence.util.TaskStatus;
import java.io.IOException;
import javax.ejb.EJB;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

/**
 *
 * @author Thomas Roelens
 */
public class CompleteTaskServlet extends HttpServlet {

    @EJB
    private PatientRemote patientBean;
    @EJB
    private TaskRemote taskBean;

    /** 
     * Processes requests for both HTTP <code>GET</code> and <code>POST</code> methods.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    protected void processRequest(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        boolean validate = true;
        try {
            Long tId = Long.parseLong(request.getParameter("id"));
            String username = request.getUserPrincipal().getName();
            Long pId = patientBean.getPatientId(username);

            if (tId == null) {
                validate = false;
                request.getSession().setAttribute("flash", "An error occured when completing your task, please try again!");
            } else {
                taskBean.updateTaskStatus(tId, pId, TaskStatus.COMPLETED);
            }
        } catch (Exception ex) {
            validate = false;
            request.getSession().setAttribute("flash", "An error occured when completing your task, please try again!");
        }

        if (validate) {
            response.sendRedirect(request.getContextPath() + "/patient");
            request.getSession().setAttribute("flash", "Task completed");
        } else {
            request.getRequestDispatcher("/patient/medicationtask/take.jsp").forward(request, response);
        }
    }

    // <editor-fold defaultstate="collapsed" desc="HttpServlet methods. Click on the + sign on the left to edit the code.">
    /** 
     * Handles the HTTP <code>GET</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doGet(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Handles the HTTP <code>POST</code> method.
     * @param request servlet request
     * @param response servlet response
     * @throws ServletException if a servlet-specific error occurs
     * @throws IOException if an I/O error occurs
     */
    @Override
    protected void doPost(HttpServletRequest request, HttpServletResponse response)
            throws ServletException, IOException {
        processRequest(request, response);
    }

    /** 
     * Returns a short description of the servlet.
     * @return a String containing servlet description
     */
    @Override
    public String getServletInfo() {
        return "Short description";
    }// </editor-fold>
}
